Mechanism for handling production from cup forming machines or the like



Feb, 14, 19% L. M. HARVEY 2,497,124 MECHANISM FOR HANDLING PRODUCTIONFROM cup FORMING MACHINES OR THE LIKE Filed March 28, 1944 12Sheets-Sheet l gum i lgum 5 Feb. 14, 11950 M. HARVEY 2,497,124

MECHANISM FOR HANDLING PRQDUCTION FROM CUP FORMING MACHINES OR THE LIKEFiled March 28, 1944 12 Sheets-Sheet 2 Feb. 14% 11950 M. HARVEY2,497,124

MECHANISM FOR HANDLING PRODUCTION FROM CUP FORMING MACHINES OR THE LIKEFiled March 28, 1944 1?. Sheets-Sheet 3 Feb M, 11950 L. M. HARVEY2,497,124

MECHANISM FOR HANDLING PRODUCTION FROM cup FORMING MACHINES OR THE LIKEFiled March 28, 1944 12 Sheets-Sheet. 4

Feb. 114-, 1950 HARVEY 2,497,124

MECHANISM FOR HANDLING PRODUCTION FROM CUP FORMING MACHINES OR THE LIKEFiled March 28, 1944. 12 Sheets-Sheet 5 //7 ew/0r A e0 M Hm" may Feb.14,3950 L. M. HARVEY 2,497,124 MECHANISM FOR HANDLING PRODUCTION FROMcup FORMING MACHINES OR THE LIKE Filed March 28, 1944 x12 Sheets-Sheet 6Feb. 14, 1195@ HARVEY 2497 124- MECHANISM FOR HANDLING PRODUCTION FROMCUP FORMING MACHINES OR THE LIKE I 12 Sheets-Sheet 7 Filed March 28,1944 h men/ ar X60 lf l/ar veg Feb, M 1956) L. M. HARVEY MECHANISM FORHANDLING PRODUCTION FROM CUP FORMING MACHINES OR THE LIKE l2Sheets-Sheet 8 Filed March 28, 1944 //7 Mania 1 M. f/Or my Fi e/wee Feb,M 1195i? 1.. M. HARVEY 29497791124 MECHANISM FOR HANDLING PRODUCTIONFROM CUP FORMING MACHINES OR THE LIKE Filed March 28, 1944 1 .2Sheets-Sheet 9 Feb. M, 195% L. M. HARVEY 2,497,124

MECHANISM FOR HANDLING PRODUCTION FROM 00? FORMING MACHINES OR THE LIKEFiled March 28, 1944 12 Sheets-Sheet 1O Feb. 114%, 1950 L M HARVE Y2,497,124 MECHANISM FOR HANDLING PRODUCTION FROM CUP FORMING MACHINES ORTHE LIKE Filed March 28, 1944 12 Sheets-Sheet ll //7renf0r Z60 M. flarvey MECHANISM FOR 'HANIDLING PRODUCTION FROM OUR FORMING MACHINES OR THELIKE Filed March 28, 1944 12 Sheets-Sheet 12 Feb. M, 1950 M HARVEY2,497,124

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Patented Feb. 14, 1950 MECHANISM FOR HANDLING PRODUCTION FROM CUPFORMING MACHINES OR THE LIKE Leo M. Harvey, La Canada, Calif.

Original application December 17, 1942, Serial No.

Divided and this application March 28, 1944, Serial No. 528,384

13 Claims. 1

This invention relates to a construction or mechanism for handling theoutput or production of a cup forming machine or the like and it is ageneral object of the invention to provide such a mechanism which iseffective and practical for the removal of cups when finally formed bythe cup forming machine and for stacking such cups in nested formation.

This application is a division of my copending application entitledMachine for making paper cups, filed December 1'7, 1942, Serial No.469,306, which has matured into Patent No. 2,435,308.

Another object of this invention is to provide an improved paper cupmachine having novel and very effective cup transferring means fortransferring the finished cups from the die means to the cup stackingmeans.

Another object of this invention is to provide a machine of thecharacter referred to embodying a novel stacking means for stacking thecups one within the other at any selected degree of compression ortightness, thus facilitating the packaging of the finished cups.

The various objects and features of my invention will be fullyunderstood from the following detailed description of a typicalpreferred form and application of my invention, throughout whichdescription reference is made to the accompanying drawings, in which:

Fig. l is a front elevation of the machine provided by this invention.Fig. 2 is, a side elevation of the machine showing the paper supply andfeed means. Fig. 3 is an enlarged plan l vation .of the machine with themost elevated parts appearing in horizontal cross section. Fig. 4 is anenlarged fragmentary vertical detailed ect a v w il tra in he ie me nsin the operated condition and showing adjacent parts of the machine.Fig. 5' is a view similar to Fig. 4 illustrating the cup ejecting .orstacking means, a portion of the paper feed means, the scrap cuttingmeans, etc. Fig. 6 is an nlarged longitudinal detailed sectional view ofthe main clutch of the machine. Fig. 6 is an elevation View of one ofthe cams of the clutch shown in Fig. 6. Fig. 7 is a transverse detailedsectional view taken as indicated by line i! on Fig. 6. Fig. 8 is anenlarged longitudinal detailed sectional view of a sprocket and clutchassembly embodied in the paper feed means of the invention. Fig. 8 is afragmentary transverse detailed sectional view of the free runningclutch means of the structure shown in Fig. 3. 9 is an enlargedfragmentary vertical detailed sectional view of a portion of the paperfeed means. Fig. 1.0 is an enlarged fragmentary horizontal detailedsec.- tional view illustrating the cup transferring means. Fig. 11 is aplan View of certain elements of the cup transferring means showing thetwo positions of the cups during the stage trans.- ference andillustrating the different positions of the transferring elements. Fig.12 is a fragmentary vertical detailed sectional View illustrati-Ilg aportion of the means for actuating the cup transferring elements. Fig..13 is an enlarged fragmentary vertical detailed sectional view showingthe mechanism foroperating the cup transferring means. Fig. 13 is avertical dc.- tailed sectional view of the adjustable connection betweenthe walking beam and the chains. Fig. 14 is an enlarged fragmentaryvertical detailed sectional view illustrating the several means foroperating the dies. Fig. 15 is an enlarged fragmentary vertical detailedsectional view taken as indicated by line l5-i5 on Fig, 14. Fig. 16 isan enlarged fragmentary vertical detailed sectional view showing thedies in the position preceding the bead forming operation. Fig. '17 is aView similar to Fig. 16 showing the dies in position at or near thecompletion of the bead. Fig. 18 is a diagrammatic viewil'lustrating thepaper feed means and the cup transferring means. Fig. 19 is afragmentary diagrammatic view of the paper feedin means, Fig. 20 is avertical detailed sectional view of the flute forming die removed fromthe machine. Fig. 21 is a view similar to Fig. 20 illustrating the fluteforming punch. Fig. 322 is a bottom elevation of the flute forming die.Fig. 23 is ,a plan elevation of the flute forming punch. Fig. 24 is avertical sectional view of the scrap cutting means apart from the otherelements of thefmachine with certain of the members in side elevation.Fig. 25 is an enlarged plan View of a cup blank after the flutes havebeen formed therein. Fig. 26 is an enlarged side elevation of the blankprovided with the flutes. Fig. 27 is a side elevation of the cupfollowing the flute forming, cup shaping and ironing operations and Fig.23 is a fragmentary side elevation of the completed cup.-

The cup forming machine embodying the present invention may be said tocomprise, generally, a supporting and housing case It, a power means ordrive means H for driving or operatingth'e various mechanisms of themachine, a paper feed means iii, a die mechanism 13 which receives thepaper from the feed means i2 and cut-s it into blanks and forms papercups therefrom, a cup transferring and stacking mean I4 for withdrawingthe completed cups from the mechanism l3, and scrap handling means I5.

The case I supports the various elements of the machine and housesportions of the drivin means II and associated parts. The case ||l maybe a generally square or rectangular upright boxlike structure. Theopposite sides of the case II] are provided with access Openings closedby hinged doors l6. The top of the case I0 is flat and horizontal tocarry certain elements of the paper feed means l2, the die mechanism l3,etc. The walls of the case are closed and sealed to prevent the escapeof the lubricant for the driving mechanism. The lower portion of thecase It may be provided with a suitable base l1 adapted to rest on thfloor or other support.

In the preferred form of the invention the machine is entirelyself-contained and embodies its own power means. In the constructionillustrated the power means includes a suitable electric motor M mountedon a bracket l8 secured on a wall of the case H]. The motor M is mountedon, what I will term, the rear side of the case I. The drive means II ischaracterized by a single crank shaft 9 and all of the working parts ofthe machine are driven from this single crank shaft. In the preferredconstruction illustrated, the motor M is mounted to have its shafthorizontal and the crank shaft I9 is rotatably mounted in the lowerportion of the case I9 to be below the shaft of the motor M and toextend at right angles to the motor shaft. The crank shaft I9 isrotatably supported by suitable spaced bearings in the case. A clutchedworm drive is provided between the motor M and the crank shaft I9.

The clutched drive includes a flanged mounting plate or carrier 2|secured to the rear wall of the case ID by screws 22 and having a hub 23which projects freely through an opening 24 in the case wall, see Figs.6 and 7. The hub 23 has an inward extension 25 which projects somedistance into the case It]. A horizontal shaft 26 extends longitudinallythrough the hub 23 and its extension 25 and continues outwardly from thecase In. An anti-friction bearing 21 in the carrier 2| and ananti-friction bearing 28 in the inner part of the extension 25 supportthe shaft 26 for free rotation. The bearing 21 has shouldered engagementin the carrier 2| and is retained by a ring 29 secured to the carrier 2|by screws 30. A nut 3| is threaded on the shaft 26 at one side of thebearing 21 and a rib or annular flange 32 is provided on the shaft atthe other side of the bearing 21 so that the shaft 26 is held againstendwise movement. A nut 33 is provided on the inner extremity of theshaft 26 at one side of the bearing 28 and a bushing or spacer 34 isprovided on the shaft at the other side of the bearing 26 and theseelements may assist in holding the shaft against endwise movement.

A worm 35 is fixed or keyed on the shaft 26 at the end of the spacer 34and meshes with a worm wheel 36 keyed to the crank shaft I911. The underside of the hub extension 25 is open to pass or admit the worm wheel 36.The worm gearing operatively connects the clutch shaft 26 with the crankshaft |9a.

The power means or drive means further includes a pulley 31 rotatablysupported on the projecting portion of the clutch shaft 26 at theexterior of the case I0. A belt 38 operates over the pulley 31 and apulley 39 fixed on the shaft of the motor M so that the pulley 31 isdriven by the motor.

The pulley 31 may be proportioned 75 to serve as a fly wheel and has along hub 40 which surrounds the projecting portion of the shaft 26 inspaced relation thereto. An antifriction bearing 4| rotatably supportsthe inner portion of the pulley 31 on the clutch shaft 26. The bearing4| has shouldered engagement in the pulley 31 and has its inner endengaged against the flange 32. An anti-friction bearing 42 is mounted ona reduced outer end portion of the clutch shaft 26 and rotatably carriesthe outer part of the pulley hub 40. The inner side of the bearing 42engages against a shoulder on the shaft 26 and a nut 43 is provided onthe end of the shaft to retain the bearing 42 and to assist inpreventing endwise movement of the pulley 31. A cap 44 may cover the nut43. It i preferred to provide a sealing means or sealing assembly 45 onthe above mentioned ring 29 to seal between the ring and the hub of thepulley 31 to retain lubricant within the clutch assembly and to preventthe entrance of dirt into the assembly.

The clutch of the drive means includes a sleeve 46 freely slidable onthe shaft 26 and located between the nut 3| and the worm 35. An externalannular groove 41 is provided in the sleeve 46. Fork means is providedfor shifting the sleeve 46 back and forth and includes a shaft or pin 48turnably carried by spaced lugs 49 on the upper side of the hubextension 25, see Fig. '7. A fork 50 is pivotally supported by the pin48 between the lugs 49 and projects dcwnwardly through an opening 5| inthe upper wall of the extension 25. A yoke 52 is located between thearms of the fork and is pivotally secured thereto by pins 53. The yoke52 engages in the groove 41 of the sleeve 46.

Manual means is provided for effecting longitudinal shifting of thesleeve 46. A clutch handle or lever 54 is mounted on a side of the case[0 at a conveniently accessible point near the upper end of the case,see Fig. 1. A suitable mechanical linkage 55 operatively connects thelever 54 with the fork 50. It will be seen how manual operation of thelever '54 will result in axial shifting of the sleeve 46 back and forthalong the clutch shaft 26.

The clutch means further includes an assembly of friction discs 56arranged within the outer portion of the pulley hub 49 and an operativeconnection between the shiftable sleeve 46 and the disc assembly forcontrolling or operating the latter. The discs 56 are disposed within atubular shell 51 fixed in the pulley hub 40 and are engaged betweenspaced collars 58 secured on the shaft 26. Alternate discs 56 are keyedor fixed to the shaft 26 and the intervening discs 56 are keyed or fixedto the shell 51. The discs 56 are adapted to freely pass one anotherwithout engagement or appreciable friction when the clutch is released.

The means for operating or controlling the clutch disc assembly 56includes a sleeve 59 freely surrounding the shaft 26 within the pulleyhub 46. An inner sleeve 60 is spaced within the sleeve 59 and is securedto the shaft 26 by a pin 6| or other means. The inner sleeve 60 carriesone or more pivoted dogs 62 which are operable to compress the clutchdisc assembly 56 to provide for the transmission of rotation between thepulley 31 and the clutch shaft 26. The dogs 62 act against the innercollar or ring 58. Outward movement of the outer sleeve 59 serves toactuate the dogs 62 to provide the clutching engagement at the discs 56.Pins 63 project inwardly from the outer sleeve 59 and are adapted tohave camming engagement with the dogs 52 to pivot or actuate the dogswhen the sleeve 59 is shifted outwardly.

An operative connection is provided between the fork operated sleeve 46and the dog actuating sleeve 59. The clutch shaft 26 is bored from itsinner end to have a longitudinal opening 64. A shift pin 65 is shiftablelongitudinally in the opening 54. The shift pin 65 serves to transmitmovement from the sleeve 46 to the sleeve 59. A longitudinal slot 65 isprovided in the shaft 26 to communicate with its opening 64 and a pin 61is engaged in or secured to the sleeve 46 and engages with or isconnected to the shift pin 65 to connect the yoke and shift pin. Alongitudinal slot 68 is provided in the clutch shaft 26 at a pointspaced outwardly from the bearing 41 and a pin 69 is secured to orcarried by the outer shaft sleeve 59 and operates in the slot 68. Inpractice the pin 69 may pass completely through the slot 68 and throughan opening in the shift pin 65. The pins 61 and 69 have sufficientIongitudinal movement in their respective slots 56 and 58 to provide formovement of the sleeve 59 between the position where the clutch isreleased and the position where the clutch disc assembly 56 is engagedto transmit rotation from the pulley 31 to the clutch shaft 25.

It is preferred to incorporate a brake means in the clutched drive sothat the mechanism may be quickly stopped when the clutch is disengaged.U J

This means may include a tubular brake ring secured within the hub .23and having shouldered engagement in the hub. The brake ring 10 has atapered internal surface. The sleeve 46, which surrounds the clutchshaft 26 and which is operated by the fork and yoke assembly, carries atapered or frusto-conical brake part II which is engageable in the ring10 to brake movement of the machine parts.

It will be seen that when the clutch handle or lever 54 is moved in onedirection the sleeve 46 moves outwardly so that the shift pin 65 andouter sleeve 59 likewise move outwardly and upon outward movement of thesleeve 59 the pins 63 actuate the dogs 62 to engage the disc assembly 56for the transmission of rotation from the pulley 31 to the shaft andthus drive the crank shaft l9. Upon movement of the clutch lever 54 inthe other direction the sleeve 46, the shift pin 65 and the sleeve 59are moved inwardly to release the disc assembly 56 and thus disengagethe clutch and the brake part II is brought into cooperation with thebrake ring 19 to stop movement of the machine parts. It is to beunderstood that a suitable switch means is provided I for the control ofthe motor M.

The feed means l2 operates to intermittently advance or feed a web ofpaper or other material to the mechanism l3 which cuts the cup blankstherefrom and then forms the blanks into the completed cups. The feedmeans I 2 embodies several important features. For example, it embodiesmeans for supporting or employing a large-capacity supply roll I2 ofwaxed paper, or the like, and automatically intermittently withdraws apredetermined length of paper from this supply and delivers it to thecutting and forming mechanism 13 in timed relation thereto. The feedmeans [2 is readily regulable to advance any desired amount or length ofthe paper or material to provide for the making of cups throughout avery wide range of cup sizes. This adjustment, together with appropriatechanges in the dies of the mechanism 13, adapts the single machine forthe manufacture of a wide range of containers 01 cups. The feed means I2operates in timed synchronism with the mechanism I3 and is positive andeflicient in its feeding of the paper as the supply roll reduces indiameter until completely exhausted.

The feed means I2 includes a structure for supporting a supply of thematerial or paper of which the cups are to be formed. This structure mayinclude a support or bracket l3 mounted on the front of the case if! andcarrying a pair of forwardly projecting rigid arms 16. A horizontalshaft '55 extends between and is supported by the outer portions of thearms 14. The shaft 15 serves to carry the supply roll 12 of paper.

The roll 12 comprises a single continuous web or length of waxed paperor other material of which the cups are to be formed. As illustrated,the shaft 75 is adapted to carry a large supply roll 32. Adjustablespools '16 are provided on the shaft 15 to center and support the roll12, Fig. 3. It is to be understood that the roll 12 is readily replacedwhen exhausted. The supply roll 12 is positioned so that the web orstrip S of the paper passes from the upper portion of the roll towardthe front of the case I0.

Idler means is provided to prevent the development of slack in the stripS as it passes from the roll 12 to the feed means proper of the machine.A pair of levers or arms Ti is pivotally supported on the end portionsof the shaft 15 and projects rearwardly toward the case It A shaft 18extends between the end portions of the arms 11 and supports a freelyrotatable roll 19. This roll 19 is in the nature of an idler ortensioning roll. The paper strip S passes down under the roll 19 andcontinues back up to the feed means proper of the machine. It ispreferred to spring load the arms Tl so that a proper tension ismaintained on the strip S and so that the paper will not buckle ordevelop excessive slack. In the construction illustrated leaf springs 86are secured to the bracket arms 14 and bear downwardly on the arms 1'!so that the idler roll 3'9 is constantly urged downward.

The feed means I2 further includes a pair of spaced feed rolls 8! and 82for advancing the strip S across the top of the machine, see Figs. 9 and18. Mounting means or brackets 83 and 64 are provided on the front andthe rear walls respectively of the case it adjacent the top of the caseto carry the feed rolls 8! and 82 and the associated parts. The feedrolls 8! and 82 are carried by horizontal shafts which are rotatablysupported by suitable bearings 85 on the brackets 8-3. It is preferredto face or cover the feed rolls 8| and 82 with rubber or frictionmaterial to assure the positive advance of the paper strip S. Inaccordance with the invention the feed rolls 8| and 82 are connected forsimultaneous intermittent rotation. A sprocket 86 is provided on an endof each feed roll 8| and 82 and an endless chain 81 operates over thetwo sprockets 86. The chain 8? is operated or driven by the power meansby a drive to be described below. A roll 88 is located above the forwardfeed roll 8i to cooperate with the paper strip S to maintain the stripin frictional cooperation with the feed roll so that the strip ispositively advanced. The roll 85 is carried by a shaft 89 which iseccentric with respect to its end portions 9% see Fig. 18. These endportions are turnably mounted in suitable bearings 95 on the forwardbracket 83 and a lever or handle 92 is fixed to one end of the shaft 89so that the shaft may be manually turned. The operator may move the roll88 into and out of cooperation with the strip S by merely shifting oroperating the handle 92. When the handle 92 is moved in one directionthe roll 88 is lowered to press against the strip S and thus maintainthe strip in engagement with the forward feed roll 8I to be advanced bythe same. When the handle 92 is turned in the other direction the roll88 is raised from the strip S and the strip is no longer driven oradvanced by the roll 8!. Thus, the movably supported roll 88 forms aconvenient means for initiating and stopping the advancement of thepaper strip S as required during operation of the machine. A roll 93,similar to the roll 88, is provided above the rear feed roll 82. Theshaft of the roll 93 is carried by suitable bearings 94 on the rearbracket 84. The roll 93 has its axis spaced forwardly from the axis ofthe rear feed roll 92 so that it is par ticularly effective inmaintaining the paper strip S in engagement with the face of the roll82. It is preferred to face or cover the rolls 88 and 93 with rubber orfriction material. The rear driving roll or feed roll 82 advances orejects the scrap paper remaining after the cup blanks have been cut fromthe strip S by the mechanism The machine preferably includes means foraiding in removing or withdrawing the paper strip S from the supply rollI2. cludes a pair of arms 95 pivotally supported by a pin 96 secured tothe forward bracket 83. The arms 95 project forwardly and downwardly topass above the center of the supply roll i2 and are preferably curvedupwardly so that they do not interfere with the supply roll. Ahorizontal pin or shaft 91 is carried by the outer ends of the arms 95and a roll 98 is freely rotatable on the shaft 91. The roll 98 isadapted to engage or bear downwardly against the periphery of the supplyroll 72 and is faced with rubber or friction material to have drivingengagement with the outermost convolution of the roll. The drive for theroll 98 comprises a flat rubber belt 99 operated over the abovedescribed roll 88 and the roll 98. There may be a single centrallydisposed belt 99 engaged in annular grooves in the rolls 88 and 98. Thebelt 99 passes over an idler pulley I on the pin 96 and engages over asecond idler I0! spaced forwardly from the pulley I00. The rubber belt99 is extensible and contractible to compensate for changes in theangular position of the arms 95 as the diameter of the supply roll 12grows less during operation of the machine. It will be seen that theforward feed roll 8! drives the adjustable roll 88 and that the belt 99operatively connects the roll 98 with the roll 88 so that the roll 98 iseffectively driven. The rotating roll 98 assists in rotating the feedroll I2 and in advancing the paper strip from the surface of the supplyroll.

The drive for the feed means I2 is characterized by its adjustabilitywhereby the material strip S may be advanced any selected or requireddistance during each phase of operation. The drive for the feed meansincludes a walking beam I02 having one end supported by a pivot pin I03fixed on a wall of the case I9, see Fig. 13. The walking beam I02 isarranged within the lower portion of the case l0 and is spaced above thecrank shaft I9. The walking beam I02 extends in a direction transverseof the crank shaft I9. bearing I05 engaged on the intermediate crank I06of the crank shaft I9 and has its other end This means in- A connectingrod I94 has a connected with the walking beam I02 by a pin I07. Duringeach revolution of the crank shaft if! the walking beam I02 swings orpivots up and down. A pair of flexible elements or driving chains isconnected with the walking beam I02 and extends to a compound sprocketI09 positioned below and adjacent the feed chain 8'1.

It is a feature of the construction that the connection of the chainsI08 with the walking beam I 02 is adjustable along the beam to vary thestroke or movement of the feed chain 81 and, therefore, vary the extentof advancement of the strip S. A longitudinal slot II 0 of substantiallength is provided in the upper portion of the Walking beam I02. A blockIII is shiftable along the slot and carries a yoke II2 which projectsabove the beam. The engagement of the block III in the slot IIO holdsthe block against turning. A pin II3 passes through openings in the yokeH2 and carries an equalizing bar H4. The lower ends of the spaced chainsI08 are anchored to the opposite end portions of the equalizing bar H4.

Accurate and conveniently operable means is provided for adjusting theblock II I along the slot H0 to shift the point of connection of thechains I08 with the beam I02, moving this point of connection toward oraway from the axis of the walking beam I 02 as required to regulate thestroke or advancement of the strip S. This adjusting means includes ascrew H5 extending longitudinally through the slot H0 and having screwthreaded engagement in an opening in the block I I I. The screw H5 isengaged in an opening I IS in the walking beam I02 to be held againstlongitudinal movement and has a head I I! on its outer end exposed atthe end of the beam I02 for ready engagement by a wrench or the like. Alook nut H8 is threaded on the screw H5 to normally lock or hold thescrew against rotation. The screw head H1 and the nut II8 are located tobe readily engageable by a wrench or similar tool inserted through anopening in the rear wall of the case I0. It will be seen that uponloosening the nut II8 the screw II5 may be rotated to shift the blockII'I toward or away from the pivotal axis of the walking beam I02 toshorten or lengthen the stroke or movement imparted to the chains I08.

The compound sprocket I09, which is best illustrated in Fig. 8 of thedrawings, is a clutched sprocket for producing movement of the chain 81when turned by downward movement of the chains I08 but which imparts nomotion to the chain 81 during the return stroke of the walking beam I02and its chains I08. The sprocket I09 comprises two bolted togethersections II9 provided at their outer ends with sprocket teeth I20. Thechains I08 are trained over the series of teeth I and are anchored orfixed to the sprocket II9 as at I2I in Fig. 18. The sprocket sectionsII9 are tubular having a central longitudinal opening I22 which receivesa horizontal shaft I23 with substantial clearance. The sprocket I09 issupported on the shaft I23 by antifriction bearings I24 so that it mayhave free rotation on the shaft. A central internal annular groove I25is provided in the sprocket sections H9 and a ring I26 is fixed in thegroove. The ring I28 has a series of annular internal pitched faces I21,each terminating in an abrupt shoulder I28. A collar I29 is keyed to theshaft I23 within the sprocket I09 and has an annular enlargement orflange I 30 which extends into the above mentioned groove I25. Theflange I30 is provided with a finished cylindrical concentric peripheralsurface.

A ball or roller member I3I rides on each pitched surface I2'I of thering I26 and the members are cooperable with the periphery of the flangeI30. Springs I32 are engaged between the shoulders I28 and the membersl3I to yieldingly urge the members to ride down the faces I27 intocooperation with the peripheral surface of the flange I30. When thesprocket I09 is turned in a clockwise direction, as indicated by thearrow in Fig. 18, the members I3I are caused to ride inwardly on thesurfaces I21 and thus almost immediately bind between the surfaces I21and the periphery of the flange I39 to transmit rotation from thesprocket I09 to the shaft I23. When the sprocket I09 is given retrogrademovement the members I3I ride back or out on the surfaces I2? and thesprocket I09 is free to turn without producing rotation of the shaftI23. The shaft I23 extends outwardly beyond both ends of the clutchedsprocket I09 and is rotatably supported at one end by an anti-frictionbearing I33 carried by a flange or bracket I34 of the case I9. A spacerI35 is provided on the shaft I23 between the bearing I33 and theadjacent bearing I24. The collar I29 within the sprocket I09 serves tospace the two bearings I24 and the bearings have shouldered cooperationwith the sprocket I99. A nut I35 is threaded on the shaft I23 and clampsagainst the outermost bearing I24. It will be seen that the structurejust described serves to hold the clutched sprocket I09 against axialmovement along the shaft I 23.

The shaft 123- of the clutched sprocket I09 carries a sprocket I31 fordriving the chain 9?. The sprocket I3! is keyed on the end portion ofthe shaft 23 which projects beyond the bearing I33. A screw I38 isthreaded in the end portion of the shaft I23 and clamps a washer I39against the hub of the sprocket I31 to hold the sprocket in against thebearing I33, which in turn bears inwardly against the spacer I35. Alubricant passage M9 leads inwardly through the shaft I23 from the outerend of the screw I38 to carry lubricant to the interior of the collarD29 which has a lubricant channel I4I leading to the bearings I24.

Ihe drive sprocket I31 keyed to the clutch shaft 523 is spaced below andforwardly of the rear feed roll 82 and an idler sprocket I 42 1s spacedbelow the feed r011 sprocket 35 to direct the chain Bl over the drivesprocket I31. The idler sprocket I42 has an eccentric shaft I43 carriedby suitable bearings I44 on the rear case bracket 84 and the eccentricshaft may be adjusted or turned so that the idler sprocket E42 takes upany slack that may develop in the chain 9?. It will be seen that uponthe downward stroke of the walking beam I02 that the chains E58 causerotation of the sprocket I99 and this rotation is transmitted to thedrive sprocket I3! through the clutch members I3! and the shaft I23 sothat the chain 81 is moved a given distance to advance a pre-determinedlength or portion of the paper strip S to the cutting and cup formmgmechanism I3.

Means is provided to turn back or return the clutched sprocket I09during the upward strokes of the walking beam I92. This means ispreferably a spring means associated with the clutched sprocket I 09. Inthe preferred construction illustrated the spring return for thesprocket I09 includes an anchor block I45 secured in an opening I45 of aflange or bracket I-47 in the case Ill. The block I45 is tubular toreceive the projecting end portion of the shaft I23 and the block I45may be of suificient length to partially telescope over the nut I36. Acup or flange I50 may be provided on the adjacent end of the sprocketI99 to telescope over the end portion of the anchor block I45 withsubstantial clearance. A coiled torsional spring I48 SLHIOLlIldS theanchor block I95 and has an out-turned end portion engaged in a slot 549in the flange I50 and has its other end portion anchored in an openingI'5I in the anchor block I45. When the sprocket I09 is turned during thedownward stroke of the walking beam 502 the spring I48 is subjected totorque or increased torque and energy is stored up in the spring. Whenthe walking beam I02 begins its upward stroke the spring I48turns thesprocket 599 back so that the chains I08 are rewound on the sprocket.The spring I48 operates to completely restore the sprocket I09 duringeach upward stroke of the walking beam I02 to prepare the sprocket forthe next active stroke. During the return movement of the sprocket I09,that is, during the upward stroke of the walking beam I02 the clutchmembers i3I ride outward on the surface I2! or at least do not Wedgebetween the surfaces I21 and the periphery of the flange I39 and thesprocket I09 is turned back without producing rotation of the shaft I23.Accordingly, the drive chain 81 of the paper feed means remainsstationary during the return strokes or upward strokes of the walkingbeam I02. It is to be observed that the feed means I2 described indetail above is entirely automatic and p ra e t adva e the p per s rip agiven distance, that is to supply a given amount of paper to themechanism I2, during each revolution of the chank shaft I9.

The mechanism I3 receives the strip S as it is advanced by the feedmeans I2 and cuts a disc 40 shaped cup blank from each strip portionthus I advanced and then performs a number of operations on the blank toshape the same into a complete strong, self-sustaining container or cuphaving a beaded or rolled rim. The mechanism I3 performs the severaloperations during the time period required for the advancement of eachportion of the strip S, that is, during each complete up and down cycleof the walking beam I 02 and the mechanism I3 may be operated rapidly toform a large number of completed cups per minute. The blank cutting andforming mechanism I3 comprises a number of forming dies and punchesassembled and operated in concentric relation relative to a single axisso that all of the cup blank cutting and cup forming operations occurwhile the cup remains on a single axis. In the preferred structureillustrated the cup .0 moves but a short distance along a vertical axiswithout turning or rotating and is at the l pper 0 part or side of thecase I0 at all times so that it cannot be soiled by the lubricant of thedrive means, etc.

The mechanism I3 includes a supporting plate I52 mounted on the upperwall of the case i0 65 to extend across an opening I53 therein.Ahorizontal passage or guide channel I54 passes below this plate 552.The channel I 54 extends from the forward feed roll BI and serves toguide or direct the strip S to the mechanism 13 and to guide 7 the scrapfrom the mechanism. The first Operation performed by the mechanism I3 inthe manufacture of a given cup 0 is the cutting of the cup blank and Iwill proceed with a description of the blank cutting means, bestillustrated in Fig. 4.

The blank cutting means includes a fixed rin of the stationary channelstructure I59. ring I64 is substantiall compressed during the .upwardmovement of the blank cutting sleeve I56 I55 and a movable ring orsleeve I56 cooperable one with the other to shear off the paper and thusform a disc shaped blank. The stationary ring 155 is secured to theunder side of the fixed plate cutting ring or sleeve I56 is secured inthe upper portion of a vertically movable cross head NH.

The cross head I6I has a flanged or thickened lower portion providedwith a central opening I62. An upstanding central hub or collar I63 isbolted or otherwise fixed to the thickened lower portion of the crosshead I6I and the blank cutting sleeve I56 is secured in the collar I63to project beyond its upper end. The cutting sleeve I56 has a flat upperend and the sleeve is proportioned to accurately or closely fit withinthe stationary ring I55. between a position where its upper end isspaced below the channel I54 and the position where its The sleeve I56is movable upper portion is received Within the ring I55, serving to cutthe cup blank during this movement and operating to support the cupblank within the ring I55 when in its uppermost position. An annularmember or ring I64 of rubber or other resilient material engages aroundthe .projecting upper portion of the movable blank cutting sleeve I56and is engaged between the upper end of the collar I63 and the lowerside The and serves to clear the sleeve I56 and return the same to itslower position.

The cross head I6I carrying the cutting sleeve I56 is operated by thepower shaft or crank shaft IS. The means for operating the cross headI6I includes ears or lugs I65 projecting from opposite ends of the crosshead I6I and pairs of operating rods I66 secured to the lugs I65 andprojecting .downwardly therefrom, see Fig. 14. Bull gears I61 are keyedor fixed to end portions of the shaft I9 which project beyond thebearings 20 and the inner sides of the bull gears IIi'I carry, what Iwill term, outer cams I68. Each of the cams I68 has a lift or raisedpart I69 on its active peripheral face, see Fig. 15. A roller I19 isrotatably secured to the lower ends of each pair of rods I66 beingcarried by pins or shafts I1I fixed in the cross bars I12 which connectthe lower ends of the adjacent rods I66. The rollers I19 cooperate withthe cams I68. During each revolution of the crank shaft I9 the raisedcam parts I69 cooperate with the rollers I19 to move the cross head I6Iupwardly to actuate the cutting sleeve I56. Asillustrated in Fig. 15,the raised cam parts I69 are relatively short and the cutter sleeve I56remains in its actuated or raised position only a relative short timeand then returns to its idle or lower position when the rollers I19leave forming die I 14, see Fig. 4. The lower die or punch I13 ismovable vartically within the above described cutting sleeve I56, whilethe upper die I14 is stationary, being mounted in the plate I52. Thelower die or punch I13 is a tubular member or ring having a centralvertical opening I15 and the punch is shaped and proportioned to ride upand down within the sleeve I56 to be guided thereby. The upper die I14is likewise a tubular or ring-like part having a central opening I16which registers with an opening I11 in the plate I52. The upper die I14is fixed to the under side of the plate I52 and may be secured in acentral recess in the plate by the screws I 51 which serve to attach thecutting ring I55 to the plate, as described above. The die I14 nestswithin the upper portion of the cutting ring I55 and has a flange I18provided with openings which pass or receive the screws I51, see Fig. 4.

The under side of the die I14 is dished, having a frusto-conical concavesurface pitched upwardly and inwardly from the cutting ring I55 to theopening I16. A plurality of radial grooves I19 is provided in thedished-under surface of the die I14. The grooves I19 are equallycircumferentially spaced and are identical in size and shape. The radialgrooves I19 preferably have flat downwardly convergent side walls andflat bottom or upper walls which are pitched upwardly and inwardlytoward the common vertical axis of the mechanism I3. The upper side ofthe lower flute forming die or punch I19 is formed to mate with or nestin the die I14 to press or form the flutes in the blank of the cup. Theupper side of the punch I13 is fr-usto-conical sloping upwardly andinwardly .from its periphery to the central opening I15. A plurality ofcircumferentially spaced ribs I89 is provided on the upper side of theflute forming punch I13. The ribs I39 are identical in size and shapeand are equally spaced one from the other. The grooves I 19 and the ribsI89 are related so that the ribs I89 are adapted to enter the grooves toform the flutes in the paper blank. It will be seen that when the lowerdie or punch I13 is pressed upwardly within the stationary die I14 thegrooves I19 and ribs I90 cooperate to form the flutes in the cup blankand the cooperation of the die and punch gives the blank its initialdished shape. It should be noted that the grooves I19 and ribs I99diminish in depth as the extend inwardly and that they terminate somedistance from the common vertical axis of the mechanism I3 leaving aplain or unfluted central portion in the blank.

The means for carrying and operating the flute forming punch I13includes a cross head I8I disposed below the cross head I6I of the blankcutting means, see Fig. 4. The cross head IBI is flanged or reenforcedand has a central vertical opening which receives a tubular upstandingcolumn I82. A nut I83 may be threaded on the lower portion of the columnI82 to clamp against the under side of the cross head I8I' to secure thecolumn to the head. The column I62 extends upwardly and is receivedwithin the tubular cross head I6I. A flange I84 on the upper end of thecolumn I82 is slidably received within the collar I63. Screws I85removably secure the die or punch I 13 to the upper side of the flangeI84. The flange I84 and the punch I13 are eifectively guided forvertical movement by the collar I63 and the cutting sleeve I56.

Cam means associated with the crank shaft I9 is provided to operate thecross head I8I of the flute forming punch I13. Pairs of spaced adjacentpush rods or operating rods I are fixed to lugs or enlargements on theends of the cross head I8I, see Fig. 14. The rods I86 extend downwardlyto adjacent the bull gears I61 and the low or ends of the adjacent rodsI80 are connected by heads or tie members I07, see Fig. 15. An annularcam I00 is fixed to the inner side of each bull gear I01 within theouter cam I08. Each cam I00 has an outwardly projecting continuous camtrack or cam ridge I00 and the tie members I81 on the rods I80 carrymeans for cooperating with these cam ridges. In practice, each tiemember I87 carries an upper roller I90 for cooperating with the outersurface of the cam ridge I80 and carries a lower roller I9I forcooperating with the inner surface of the cam ridge I89. The rollers I00and I0! are rotatably supported on shafts or pins I02 and I93,respectively, on the members I 31. The cams I38 hare. identical shapesand settings and are formed to cause rather sudden or rapid upward anddownward movements of the flute forming punch I73. The cooperation ofthe external surface of the cam ridges I80 with the rollers I50 producesthe upward or active movement of the flute forming punch H3 and theengagement of the inner surfaces of the ridges I80 with the innerrollers I9I produces the return or downward stroke of the punch. It willbe seen that during each revolution of the crank shaft I0 the fluteforming punch I'IS is positively operated up and down so that the fiutesare formed in the cup blank and the blank is given a dishedconfiguration.

When the flutes have been formed in the blank by the punch I'I3 and dieI'M, as just described, the mechanism I3 operates to compress the flutesof the cup blank and to give the blank its final cup shape, thecollapsing or compressing of the flutes permitting or providing for theforming of the cup C to the required shape and also giving the wall ofthe cup substantially rigidity. The mechanism It includes a pair ofcooperating die elements for giving the cup blank its cup shape. Thelower die element is in the nature of a punch I 04 and the upper dieelement is a socket-like die I95 facing downwardly to receive the punchI90, 'see Fig. 4. In accordance with the invention the punch I 00 andthe die I95 are in coaxial telescopic relation with the other cupforming elements of the mechanism I3.

The cup forming die I94 is an elongate tubular member adapted to move upthrough the openings I16 and III with considerable clearance to enter orcooperate with the downwardly moving die I05 which is disposed above theplate I52. The punch I90 has a cylindrical lower portion and its upperportion is shaped to give the wall of the finished cup C the desiredconfiguration. In the preferred construction the upper portion of thepunch I04 is round in cross section and its external surface I90gradually slopes upwardly and inwardly. This external active surface I95of the punch I04 is smooth and regular to engage within the cup Cwithout marring or distorting the paper of the cup. As best illustratedin Figs. 16 and 17, an annular upwardly facing shoulder I01 occurs onthe exterior of the punch I94 where the sloping surface I90 mates orjoins the cylindrical surface on the lower portion of the punch I00. Theshoulder I0? is preferably fiat and occupies a plane normal to thelongitudinal axis of the punch I04. The upperend of the punch I04 isflat and normal to its longitudinal axis except for 14 a raised annularridge I08 occurring at its periphcry.

The cup forming punch I94 is carried by a vertically movable rod orcolumn 200 through the medium of a spring loaded slack connection. Thecolumn 200 has its lower portion received in a central opening 20I in across head 202 which is located below the cross head IN. A flange 203 onthe column 200 engages against the upper side of the cross head 202 anda nut 204 is threaded on the column 200 to engage against the under sideof the cross head 202 and thus secure the column to the cross head. Thecolumn 200 passes upwardly through the column I02 with ample clearanceand is provided with a central longitudinal opening 205 which extendsthrough it from its upper end to its lower end. The upper end portion ofthe column 200 is reduced in external diameter. A stem 206 is slidablein the upper portion of the column opening 205 and the stem is providedWith a central longitudinal opening 201. The cup forming punch I94 isremovably attached to the upper end of the slidable stem 20% to movetherewith. A screw 208 is entered in the upper end of the punch I94 andits head has shouldered engagement within the punch. The screw 200extends beyond the lower end of the punch I54 and is threaded in theopening 20? of the stem 205. The screw 208 has shouldered cooperationwith the upper portion of the stem 205 at 200. Means is provided forlimiting the movement of the stem 205 and punch I94 relative to thecolumn 200. This means may include a pin 2I0 carried in a transverseopening in the stem 200, The pin 2I0 projects from opposite sides of thestem 206 and extends-into diametrically opposite longitudinal slots 2IIin the wall of the column 200.

The punch I04 is spring held or spring loaded, being urged upwardly sothat it is spaced some distance above the upper end of the column 200when in its idle or unactuated condition. The means for yieldinglyurging the punch I94 upwardly comprises a coiled spring 2I2 arrangedwithin the opening 205 of the column 200. The spring 205 is held undercompression between the lower end of the punch carrying stem 205 and theupper end of a plug 2I3 threaded in the lower end of the column 200. Thespring 2I2 is normally under compression to hold the punch I04 where itslower end is spaced above the upper end of the column 200 but the springis yieldable and is subject to further compression when the punch I94 isengaged in the die I95, as will be later described.

The cup forming punch I94 is operated by the shaft I9 through the mediumof crank pins and connecting rods. A crank pin 2M projects from theouter side of each bull gear I61, see Fig, 14. The pins 2i4 are turnablyengaged in openings 2I5 in the lower ends of connecting rods ZIG. Theends of the cross head 202 are provided with outwardly projecting studsor pins 2I'I. These pins 2I'I are turnably received in openings H8 inthe upper ends of the connecting rods 2I0. It will be seen how the crankmeans just described produces upward and downward movement of the cupforming punch I94 during each revolution of the crank shaft. Inpractice, the parts may be related so that the punch I04 is movingupwardly during the upward actuation of the flute forming punch I13 andthe upper end of the punch I94 may be in a plane at the upper end of thegrooved active face of the die I14 when the flute forming operation iscompleted.

Immediately thereafter the flute forming punch I13 moves downwardly tofree the cup blank and the punch I94 continues upwardly to push the cupblank upwardly from the die I". In this connection it is to be observedthat the inner corners or faces of the flute forming die I14 may berounded or bevelled off so that the cup blank is not injured ordistorted when the punch I94 draws it upwardly out of the die I14.

The cup forming die I95 is removably carried by a cross head 2I9disposed above the case I9 and spaced above the plate I52. A carrier 229is bolted or otherwise secured to the under side of the cross head 2I9and projects downwardly toward the plate I 52. The carrier 229 has asocket 22I (Fig. in its lower side whose longitudinal axis is concentricwith the common axis of the several elements of the mechanism I3. Anopen.- ing 222 of reduced diameter continues upwardly through thecarrier 229 from the socket 22 I. The cup forming die I95 is centrallyand vertically disposed within the socket 22L The die I95 is a tubularmember received in the socket 22I with ample clearance and the upper endof the die I95 has an inturned head or flange 223 presenting an end ofincreased area which bears on the end wall of the socket. The exteriorof the die I95 is cylindrical and of uniform diameter throughout.

The interior of the die I95 has an active cup shaping surface 224corresponding in configuration to the surface I96. The surface 224slopes downwardly and outwardly to the lower end 225 of the die I95. Thelower end 225 of the die I95 is flat and lies in a horizontal plane. Theend surface 225 is adapted to be directly opposite the shoulder I91 ofthe punch I94 to form a step or shoulder 226 on the cup C, see Figs. 16and 1'7. The cup shaping surface 224 of the die I95 has substantiallythe same inclination as the cup shaping surface I96 of the punch I94 andwhen the die and punch are cooperating the wall of the cup C is givenits final flaring configuration by these cooperating surfaces. Further,it will be observed that the cooperating active surfaces of the punchI94 and die I95 compress the fluted wall of the cup blank and the flutesare converted into pleats or folds of double thickness, thus materiallyincreasing the strength and stability of the cup. The die I95 may besecured in the carrier 220 by a bushing 22'! which extends through theopening 222 of the carrier 229. The bushing 22'! extends downwardly intothe die I95 and has a flange 229 on its lower end which bears upwardlyagainst the flange 223 of the die I95 to clamp the die upwardly againstthe upper wall of the socket 22I. The bushing 22! projects upwardlybeyond the upper end of the carrier 229 and an elongated cap 229a isthreaded on the projecting portion of the bushing and clamps against theupper end of the carrier 229 to secure the bushing in the carrier.

The cup forming die I95 moves downwardly as the cup forming punch I94moves upwardly, in other words, the two cup forming elements move towardone another to form the cup C. The means for actuating the cup formingdie I95 includes connecting rods 239 engaged on and operated byintermediate cranks 23I of the crank shaft I9, see Fig. 14. Theconnecting rods 239 extend upwardly and outwardly from their cranks 23Iand are pivotally connected with a travelling horizontally disposed bar232. The bar 232 is provided at its under side with pairs of downwardlyprojecting ears 233. Horizontal pins 234 are carried in openings in theears 233 and are turnably received in openings in the upper ends of theconnecting rods 239 to connect the rods with the travelling bars 232.Rods 235 are attached to the end portions of the travelling bar 232 byscrews 236 and extend upwardly to the cross head 2I9. As illustrated inFig. 14 of the drawings the rods 235 may slidably pass through openings23'! provided the thickened end portions of the cross head 292. Thisassists in guiding and steadying the rods 235. The rods 235 are furtherguided by bushings 238 secured in openings 239 in the upper wall of thecase I9. The upper ends of the spaced vertical rods 235 carry the crosshead 2I9. It will be seen that the cross head 2| 9 carrying the die Imoves up and down through a complete cycle during each revolution of thecrank shaft I9. The cranks or eccentric elements of the drive are sorelated that the upper cup forming die I95 moves downwardly as the cupforming punch I94 moves upwardly. These movements continue until thepunch I94 bottoms in the die I95 to bring about the full compression ofthe flutes and to give the blank its permanent cup shape.

The mechanism I3 further embodies novel means for forming a bead B onthe rim of the cup C. This means is associated with the cup formingelements just described and is driven by the same operating or drivingmeans to form and complete the bead immediately following the shaping ofthe cup C. The bead forming means includes a sleeve 249 engaged aroundthe die I95. The sleeve 249 is slidable or movable in the annulusexisting between the exterior of the die I95 and the wall of the socket22I. The length of the sleeve 249 is such that the lower end of thesleeve is slightly below the lower end of the die I95 when the sleevehas its upper end bearing against the upper wall of the socket 22I. Thesleeve 249 is movable vertically but friction means is provided toresist such movement. A recess MI is formed in the side wall of thesocket 22I at the lower end of the carrier 229. The outer wall of therecess 24I converges or slopes upwardly and inwardly. Suitable frictionmaterial 242, such as fiber or the like, is tightly packed in the recess2 to offer substantial resistance to movement of the sleeve 249. Anannular follower 243 is engaged against the lower end of the frictionmaterial 242. A gland or nut 244 is threaded on the lower end of thecarrier 229 to force the follower 243 upwardly against the frictionmaterial 242. When the nut 244 is threaded upwardly the frictionmaterial 242 is tightly compressed against the sleeve 249. The frictionmaterial 242 serves to hold the sleeve 249 against vertical movementuntil the sleeve is subjected to a positive moving force. The importanceand function of this friction holding means will be described below.

At the time when the die I95 and the punch I94 are moving together toshape the cup C the sleeve 249 is in a position where it projects asubstantial distance below the lower end of the die I 95. The frictionmaterial 242 holds the sleeve in this position and the sleeve movesdownwardly with the carrier 220 without movement relative to the dieI95. As best illustrated in Fig. 16 of the drawings, the internaldiameter of the sleeve 249 is slightly greater than the externaldiameter of the cylindrical surface 245 of the punch I9 1. The clearancebetween the internal and external surfaces, respectively, of the sleeve249 and punch I94 is just sufficient to receive the paper thickness ofthe cup blank.

